Ind. Admin. Code tit. 326, r. 1-2-52.2
Authority: IC 13-14-8; IC 13-17-3-4; IC 13-17-3-11
Sec. 52.2. "PM2.5" means particulate matter with an aerodynamic diameter less than or equal to a nominal two and five-tenths (2.5) micrometers (μm).
(Air Pollution Control Division; 326 IAC 1-2-52.2; filed Dec 20, 2004, 2:15 p.m.: 28 IR 1471; readopted filed Oct 18, 2024, 2:09 p.m.: 20241113-IR-326230809RFA)